The Valley of Olympia was a valley which constituted the southeastern region of Elis in Peloponnese, Greece. Within the valley lay the Sanctuary of Olympia, which was known in antiquity for its Olympic Games, and the tomb of Koroibos of Elis. The valley also housed the ruins of the alleged residence and tomb of Oinomaos, king of Pisa, and the mountain of Kronion.
During the Peloponnesian War the valley and the city within was visited by the Spartan misthios Kassandra.[1]